摘要
以YCJ110K3焊丝为试验材料,通过在焊丝中加入不同含量的硼铁,研究了B对熔敷金属的微观组织及力学性能的变化情况。结果表明,在一定的范围内,随着焊丝硼铁含量的增加,熔敷金属中B含量增加,屈服强度和抗拉强度逐渐提高,塑性变差。组织分析发现,加入适量B可以促进针状铁素体的形成,而过量的B使得贝氏体相变并抑制珠光体的转变,增加M-A组元的形成,导致针状铁素体含量下降。
With YCJ110K3 wire as the test material, the microstructure and mechanical properties of the deposited metal were studied by adding Fe-free iron to the wire. The results showed that with the increase of the content of boron and iron in a certain range, the content of B element in the deposited metal increased, the yield strength and tensile strength gradually increased, and the plasticity deteriorated. Tissue analysis found that the appropriate amount of B increased acicular ferrite content, but excessive B inhibited acicular ferrite formation, segregation of B elements would reduce the austenite grain boundary energy, inhibit the first eutectoid the formation of ferrite, while the formation of acicular ferrite had a certain impact.
出处
《焊接技术》
2018年第7期82-84,共3页
Welding Technology
